checksum.h

/************************************************************
 checksum.h - Checksum computation header file

 Copyright (C) 2007-2011 Hewlett-Packard Development Company, L.P.

 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 version 2 as published by the Free Software Foundation.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License along
 with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 ************************************************************/
#ifndef CHECKSUM_H
#define CHECKSUM_H

#include <stdint.h> /* for uint8_t */
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dirent.h>

#include "libfossology.h"

struct Cksum
{
  uint8_t MD5digest[16];    
  uint8_t SHA1digest[20];   
  uint64_t DataLen;         
};
typedef struct Cksum Cksum;

struct CksumFile
{
  int FileHandle;           
  unsigned char *Mmap;      
  uint64_t MmapSize;        
  uint64_t MmapOffset;      
};
typedef struct CksumFile CksumFile;

CksumFile * SumOpenFile (char *Fname);
void  SumCloseFile  (CksumFile *CF);
int CountDigits (uint64_t Num);
Cksum * SumComputeFile  (FILE *Fin);
Cksum * SumComputeBuff  (CksumFile *CF);
char *  SumToString (Cksum *Sum);
int calc_sha256sum(char* filename, char* dst);
#endif